Post or bar.



H. W.l Yosn -PosT o BAR; APPLICATION FILED AUG. a, 191o.

Patented Mar. 7, 1911.

`NT S ES PAENT oFrioE.

HENRY W. YOST, 0F SPRINGFIELD, OHIO.

POST OR BAR.

Patented Mar. 7. 1911.

To all whom it 'may concern:

Be it known that I, HENRY IV. Yosr, a citizen of the United States,residing at Springfield, in the county of Clark and State of Ohio, haveinvented certain new and useful Improvements in Posts or Bars, of whichthe following is a specification, reference being had therein to theaccompanying drawings. A

This invention relates to posts or bars and is designed morep/artieularly for the construction of frames such as are employed, forexample, in aeroplanes.

The object of the invention is to provide a bar or frame member whichwill combine minimum weight with maximum strength; and which will be soshaped as to offer a very small opposing surface to the air, a featurehighly desirable in aeroplane constructions.

A further object of the invention is to provide a bar of vthis characterwhich can be quicklyT and easily manufactured at a low cost.

In the accompanying drawings, Figure 1 is an elevation, partly brokenaway, of a portion of a bar embodying my invention; Fig. 2 is asectional view taken transversely to Fig. l; Fig. 3 is a transverse,sectional View of a slightly modified form of the in vention; and Fig.4t is a transverse, sectional View of another modified form of theinvention. i l

In Figs. 1 and 2 of the drawings the bar or postis shown as hollow andas having its side walls converging toward its opposite edges. In thepresent instance it is also shown as comprising two sections, 1, eachpreferably consisting of a series of laminations, of wood or othersuitable material, and curved outwardly so that when the two sectionsare placed with their concave faces together, the bar so formed will beof the desired shape. The degree of curvature may be varied to adapt thebar or post to the articular use to which it is to be applied IlVhen thetwo sections have been placed with their concave faces together theiradjacent edges are rigidly connected one to the other by suitable meanssuch as a fastening device. In the form of the invention shown in Figs.1 and 2 this device comprises a longitudinal strip of metal bent aboutthe adjacent edges of the two sections of the. bar and serving to clampthe same firmly together, as indicated at 2. This fastening device notonly serves to secure together the two sections of the bar, butalsoprotects the edges of the laminated sections and is itself so narrow atits outer edge as to offer but a small resistance to the air. As stated,the material employed in constructing the sections 1 of the bar or postmay be of any suitable character, but I prefer to employ wood for thispurpose, and, as here sho-wn, the two sections of the post are made upof thin strips of wood lirmly united one to the other by the use ofglue. To further increase the strength of the post or bar and to avoidthe possibility of the sections splitting I prefer to arrange the stripsof wood so that the grain of the several sections will extend in two ormore directions. As here shown each section comprises three strips orlaminations, the inner lamination or strip8, and the outer lamination orstrip, 4, having their grain eX- tending longitudinally to the bar,while the intermediate lamination or strip, 5, has its grain extendingat an angle to the grain of the inner and outer strips. In the presentinstance this angle is approximately a right angle, but this is notessential. The bar is also preferably reinforced by means of spacingblocks which are shaped to correspond to the cross sectional area of thebar and are fitted snugly within the same where they are secured byglue, as indicated at G in Fig. 1.

Thatl form of the invention shown in Fig. 3 corresponds to the formsshown in Figs. 1 and 2 in all respects save the character of thefastening device. In Fig. 3 this fastening device comprises an elongatedblock 7 arranged between the adjacent edges of the two sections, 1, ofthe bar and provided with notches 8 to receive those edges. The sides ofthe block preferably converge outwardly and are so shaped that when 4itis in place the taper of the edges will correspond substantially withthe curvature of theouter surface of the bar, thus forming a smoothharmonious whole. The block may, if desired, be laminated, and, as hereshown, consists of three strips, the two outer strips, 9, constitutingthe body of the block and having interposed between the same a thinstrip 10, the grain of which preferably extends at an angle to the grainof the two outer strips, the three strips being connected by means ofglue or in any other suitable manner.

That form of the device shown in Fig. 4

differs from the form shown in Figs. 1 and :2 in that it convergestoward one edge only and comprises a single section. This section, whichis indicated at .11, is preferably formed of a series-of layers orlaminations after the manner described in connection with Figs. 1 and 2and is bent upon itself n Vsuch a manner that the side walls convergetoward one edge thereof. The edges of this one section are connected bya fastening device 1Q which is here shown as similar to the fasteningdevice shown in Figs. 1 and 2.

It will be noted that ,in each form of the invention herein shown thebar is formed of A light material so shaped as to form a bar of verylight weight but having great strength. This strength is increased byforming the bars of laminated material and arranging the grain ofdifferent laminations at an angle one to the other. In each form the barhas its side walls converging toward one or both of its edges and theseside walls have their edges connected one to the other by suitablefastening devices.

The several forms of the device herein shown and described are used forthe purpose of illustration only and the invention can be embodied inbars or frame members of various shapes and the fastening devices maydiffer widely from those here shown. I, therefore, wish it to beunderstood that I do not desire to be limited to the details ofconstruction shown and described, for obvious modications will occur toa person skilled .in the art.

Having thus fully described my invention side walls converging towardthe edge thereof, and a device for connecting together the comprising ahollow bar having'laminated4 side walls converging toward the edgesthereof, and a fastening device for rigidly connecting said edges.

6. A structure of the character described comprisingahollow bar formedof two laminated sections spaced apart and converging toward the edgesof said bar, spacing blocks arranged within said bar, and a fasteningdevice for connecting the adjacent edges of said sections.

7. A structure of the character. described comprising a hollow bar.formed of two laminated sections spaced apart and converging toward theedges of said bar, the grain of one of the laminations of each sectionextending at an angle to the grain of another laminat-ion of thatsection. A

8. A structure of the character described, comprising a hollow barformed of two laminated sections spaced apart Vand converging toward theedges of said bar, and fastening devices for rigidly connecting theadjacent edges of said section.

In testimony whereof, I affix my signature in presence of two witnesses.

HENRY w. Yosfr.

WVitnesses:

A. C. LINK, EDWARD L. REED.

